Resist diabetes: A randomized clinical trial for resistance training maintenance in adults with prediabetesReport as inadecuate




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Objective

To determine whether a social cognitive theory SCT-based intervention improves resistance training RT maintenance and strength, and reduces prediabetes prevalence.

Research design and methods

Sedentary, overweight-obese BMI: 25–39.9 kg-m2 adults aged 50–69 N = 170 with prediabetes participated in the 15-month trial. Participants completed a supervised 3-month RT 2×-wk phase and were randomly assigned N = 159 to one of two 6-month maintenance conditions: SCT or standard care. Participants continued RT at a self-selected facility. The final 6-month period involved no contact. Assessments occurred at baseline and months 3, 9, and 15. The SCT faded-contact intervention consisted of nine tailored transition i.e., supervised training to training alone and nine follow-up sessions. Standard care involved six generic follow-up sessions. Primary outcomes were prevalence of normoglycemia and muscular strength.

Results

The retention rate was 76%. Four serious adverse events were reported. After 3 months of RT, 34% of participants were no longer prediabetic. This prevalence of normoglycemia was maintained through month 15 30%, with no group difference. There was an 18% increase in the odds of being normoglycemic for each % increase in fat-free mass. Increases in muscular strength were evident at month 3 and maintained through month 15 P<0.001, which represented improvements of 21% and 14% for chest and leg press, respectively. Results did not demonstrate a greater reduction in prediabetes prevalence in the SCT condition.

Conclusions

Resistance training is an effective, maintainable strategy for reducing prediabetes prevalence and increasing muscular strength. Future research which promotes RT initiation and maintenance in clinical and community settings is warranted.

Trial Registration

ClinicalTrials.gov NCT01112709.



Author: Brenda M. Davy , Richard A. Winett, Jyoti Savla, Elaina L. Marinik, Mary Elizabeth Baugh, Kyle D. Flack, Tanya M. Halliday, Sarah

Source: http://plos.srce.hr/



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